Chemistry Quiz

What is a homogeneous mixture?

• A mixture with multiple phases

• A mixture with one phase and no boundaries

• A mixture with cloudy particles

• A mixture with visible boundaries

Which type of mixture has one or more visible boundaries between the components?

• Solutions

• Homogeneous mixture

• Heterogeneous mixture

• Colloids

What is a solution?

• A mixture with multiple phases

• A mixture with one phase and visible boundaries

• A mixture of two or more substances that is identical throughout

• A mixture with cloudy particles

What is the difference between suspensions, colloids, and solutions?

• Suspensions have particles that settle down after a period of time

• Solutions are heterogeneous mixtures with visible boundaries

• Colloids have one phase and no boundaries

• Colloids are mixtures of salt and water

What is the principle that predicts the solubility of a substance in a given solvent?

• Like dissolves like

• Solubility is random

• Opposites attract

• Polar dissolves non-polar

What is the energy change called when one mole of a substance enters a solution?

• Heat of fusion

• Heat of reaction

• Heat of vaporization

• Heat of solution

What is the energy released when water molecules surround the ions of a salt called?

• Lattice energy

• Hydration energy

• Solvation energy

• Dissolution energy

What is the maximum amount of solute that will dissolve in a given solvent at a given temperature called?

• Density

• Molarity

• Solubility

• Concentration

Which concentration unit involves the quantity of solvent?

• Molality

• Normality

• Mole fraction

• Molarity

What is the procedure for preparing a less-concentrated solution from a more concentrated one?

• Dilution

• Evaporation

• Filtration

• Distillation